Tool for cutting and dressing stone



' (No Model.) l

Y G. LACHAPELLB Sv C. E. DEVINE.

TOOL POR CUTTINGv AND DRESSING STGNB.

Patented Mar. 15, 1892.

UNITED STATES PATENT OFFICE.

GEORGE LACHAPELLE AND CHARLES E. DEVINE, OF VILLIAMSPORT, PENNSYLVANIA.

TOOL FOR CUTTING AND DRESSING STONE.

SPECIFICATION forming part of Letters Patent No. 470,788, dated March15, 1892.

Application filed November 20, 1891. Serial No. 412:580. (No model.)

To @ZZ whom t may concern:

Be it known that we, GEORGE LACHAPELLE and CHARLES E. DEvINE, citizensof the United States, residing at lVilliamsport, in the countyeofLycoming and State of Pennsylvania, have invented anew and useful Toolfor Cutting or Dressing Stone, of which the following is aspecification.

This invention relates to tools for cutting and dressing stone; and ithas for its object to provide an improved tool for this purpose whichwill avoid the objections of having the peen end formed integral withthe Sledgehead, and will provide means whereby each and every one of theteeth comprising the said peen endcan be readily detached when brokenand new ones or those repaired readily replaced, thus materiallyreducing the expense of an entire new ltool and enhancing the efficiencyof the same, and to this end to provide a tool which provides for theremovable attachment thereto of any of the cutting devices used inconnection with cutting and dressing stone.

With these and other objects in View, which will readily appear as thenature of the invention is fully understood, the same consists in thenovel construction, combination, and

arrangement of parts hereinafter more fully described, illustrated, andclaimed.

1n the accompanying drawings, Figure l is a perspective view of astone-Working tool constructed in accordance with our invention. Fig. 2is a detail in perspective of the peentooth holder. Fig. 3 is a detailinperspective of one of the detachable teeth. Fig. 4 is va longitudinalsectional view of the tool.

Referring to the accompanying drawings, A represents a hammer or sledgehead of the ord-inary construction provided with the usual centraltransverse perforation o, adapted for the reception of the handle B, bymeans of which said head is manipulated by the operator in cutting ordressing stone. Thevsaid head -A is provided in each end thereof withthe circular recesses C, provided at the bottom thereof with theupwardlyextending squared projections c, the function of which Willreadily appear, and the outer ends upon the face of the ends of saidhead are countersunk or beveled, as at c', adapted to snugly receive thecutting or dressing tool.

As illustrated in the drawings, a single cutting-pick D may bedetachably connected or secured in one end of said head, while in theother a peen-dressing head E may be also detachably secured in said headand interchangeably used with the pick end or other tool. The said pickcomprises a holder-head d, provided with a central tapered perforationd', adapted to receive the tapered shank d2 of the pbinted pick-tooth,which may be constructed in any of kthe shapes used in devices of thischaracter. Projecting from the opposite face of said head d is thecircular securing-shank cl3, centrally and longitudinally slit, as atd4, so as to make said circular shank to comprise oppositespring-sections, which, asl

the said shank enters the slightly-tapered recesses C in the end of saidhead, will compress and bite the sides of said recess, thus securelyholding the tool in said head. The ends of the spring-tongues comprisingthe circular shank d3 are provided with squared notches d5, that areadapted as the shank is forced within said recess to take over thesquared projections c in the bottom of said recess, and thus prevent thetool from turning within the head while the same is manipulated.

The peen-end toolE comprises an enlarged rectan guiar or circularholder-head e, provided with a regular series of tapered perforationse', that are adapted to receive the series of teeth F, comprising thedressing-tool, and provided With the tapered shanks f, that are adaptedto removably engage the tapered perforations in said head e, and thesaid teeth, which may be of any shape or construction desired, may bethus easily attached to and detached from the head carrying the same. Acircular securing-shank G extends from the base of the head e and isprovided with a longitudinally-disposed slit g, forming spring tonguesupon opposite sides thereof, which serve to hold the tool securelyWithin the slightly reduced or tapered recess C in the end of the headA, and each of said springtongues are provided at their outer ends withthe squared notches g', that are adapted to IOO take over the squaredprojections c in the bot tom of said recess C, and thus prevent thepeen-tool from turning during the use of the same. The two detachabletools described as being secured in opposite ends of said head areidentical in every respect, with the exception that the peen-toolduplicates the number l of teeth and enlarges the head or holder to formthe same, and the circular shank of each are first provided at the headse and g, respectively, with the lenlarged rounded or shouldered portionH, that snugly lits Within the counter-sunk or beveled upper ends c ofsaid receiving-recesses G to complete a secure connection between thetool and the head.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

l. In a stone-working tool, the combination of the hammer or sledge headhaving circular tapered recesses in each end thereof, and the detachablecutting and dressing tools having circular or cylindricallongitudinally-split shanks forming spring-tongues adapted to beremovably inserted within said tapered recesses, substantially as setforth.

2. In a stone-Working tool, the combination of the hammer orsledge headhaving circular recesses in the ends thereof and squared pro- .jectionsin the bottom of said recesses, and

said squared projections to prevent the tool from turning, substantiallyas set forth.

3. In a stone-Working tool, the combination, with thehead having arecess in the end thereof, of the cutting or dressing tool provided witha spring-shank adapted to be removably inserted Within said recess, anda head or holder having tapered perferations and removable teeth havingtapered shanks adapted to be inserted within said tapered perforation inthe head or holder, substantially as set forth.

, 4. In a stone-working tool, the combination of the head havingcircular recesses in the ends thereof and squared projections in thebottom of said recesses, the cutting or dressing teeth-holder providedwith a series of tapered teeth-receiving perforations and an extendedsecu ring-shank having a central longitudinal slit formingspring-tongues and squared notches adapted to engage over said squaredprojections when the spring-shank is inserted within the recesses insaid head, and the detachable teeth having tapered Shanks adapted to beinserted Within said tapered perforation, substantially as set forth.

In testimony that We claim the foregoing as our own We have heretoaffixed our signatures in the presence of two witnesses.

GEORGE LACl-IAPELLE. CHARLES E. DEVINE. Vitncsses:

STERLING Covunr, Damen CARNEs.

